Everyone got its own disadvantage and advatage: But for me First Ranked is: 1. L - He is a world famous detective. L didnt have special powers to do tricks unlike Light..L got all the advantage on skills, intelligence, talent that's why Light was so eager to kill Him. In the end Shinigami killed L, which L got no chance against it.. 2. Lelouch - known for being Professional in playing chess and being smart at school. He's intelligence is uncomparable between L and Light because Lelouch is a Military strategist...Lelouch is extremely smart on doing calculations thats his major advantage which helped him through all his battle..Defeating an Entire Empire which is next to impossible. He only got being dragged down by his feelings for nunally, his best friend, and betrayal of his father...Lelouch is my second choce since he didnt rely much on his Geass Power instead used more of his talents and intelligence. 3. Light - He was a really smart and intelligent character...But for me he was just a freak who relied too much with the power of his death note nothing else...He cant do a thing without his death note...As Light tried to kill L on the TV (EP3 or 5) He already admitted his defeat in killing a fake L which made Light just a mad man who wants to kill L... That's my opinion